Following this answer I added on the "Additional command line arguments" text field this:
-f dshow -i audio="Headset (HD 450BT Hands-Free AG Audio)" -filter_complex amix=inputs=2:duration=longest
It works great when the external MIC is plugged in. But when it's not plugged in, the screen recording crashes.
How to tell it to use it only when the external micro is available (so when not it's out, it uses the "virtual-audio-capturer"?).
